M. Zamani
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View article: Magnetically supramassive and hypermassive compact stars
Magnetically supramassive and hypermassive compact stars Open
It is known that the mass of magnetized relativistic compact star is larger than that of non-magnetized one for the same equation of state and central density, albeit the excess of mass is sizable only if the magnetic fields are strong eno…
View article: The Potential Discovery of a Circumstellar Disk in M20 from Rubin First Look
The Potential Discovery of a Circumstellar Disk in M20 from Rubin First Look Open
We report a new potential circumstellar or protoplanetary disk along the eastern edge of the M20 H ii region. The disk was discovered in the Rubin Observatory “First Look” image of the M8–M20 complex. The discovery is of note as few protop…
View article: Equilibriums of extremely magnetized compact stars with force-free magnetotunnels
Equilibriums of extremely magnetized compact stars with force-free magnetotunnels Open
We present numerical solutions for stationary and axisymmetric equilibriums of compact stars associated with extremely strong magnetic fields. The interior of the compact stars is assumed to satisfy ideal magnetohydrodynamic (MHD) conditio…
View article: Energy calibration of He-3, He-4 Neutron Proportional Counters
Energy calibration of He-3, He-4 Neutron Proportional Counters Open
Two helium filled proportional counters (He-3, He-4) were irradiated with neu- trons in the energy range 0.025 eV - 10.7 MeV, in the Tandem accelerator, NCSR Demokritos, Athens. The full energy peak in He-3 proportional counter as well as …
View article: Projectile Fragmentation of 16O and 32S beams from Dubna LHE Synchrophasotron
Projectile Fragmentation of 16O and 32S beams from Dubna LHE Synchrophasotron Open
We investigate the charge changing collisions for 16O and 32S beams, using the experimental method of Solid State Nuclear Track Detectors (SSNTD). Sample reading was performed by an automatic measurement system. We determined the total cha…
View article: Dose Measurements around Spallation Neutron Sources
Dose Measurements around Spallation Neutron Sources Open
Neutron dose measurements and calculations around spallation sources are of importance for an appropriate shielding study. Two spallation sources, consisted of Pb target, have been irradiated by high-energy proton beams, delivered by the N…
View article: Inelastic cross sections in relativistic deuterons on Lead reactions
Inelastic cross sections in relativistic deuterons on Lead reactions Open
The inelastic cross section of deuterons hitting a Lead target has been determined by the beam attenuation technique. A spallation neutron source based on Lead target has been irradiated with 1.6 and 2.5 GeV deuterons. Solid state nuclear …
View article: Monte Carlo calculation of the response of He-3 counter with Geant4
Monte Carlo calculation of the response of He-3 counter with Geant4 Open
Monte Carlo calculations with Geant4 were performed to calculate the response of He-3 proportional counters for neutrons of the energy region of 230 keV – 7 MeV. The results are compared with experimental data obtained by irradiation of th…
View article: Spallation Neutron Production in the Dubna Transmutation Assembly
Spallation Neutron Production in the Dubna Transmutation Assembly Open
A large lead target with a U blanket was irradiated by 1.5 GeV protons at the Dubna Nuclotron accelerator. Spatial distributions of neutron fluxes were determined by Solid State Nuclear Track Detectors in the new experimental transmutation…
View article: Shielding around spallation neutron sources
Shielding around spallation neutron sources Open
Spallation neutron sources provide more intense and harder neutron spectrum than nuclear reactors for which a substantial amount of shielding measurements have been performed. Although the main part of the cost for a spallation station is …
View article: Electron fluence determination per Monitor Unit of a linear accelerator used for radiation therapy
Electron fluence determination per Monitor Unit of a linear accelerator used for radiation therapy Open
About 20% of patients in Greece undergoing radiotherapy were irradiated by electron beams with energies ranged between 4 to 20 MeV. The correct determination of electron beam, leads to the proper treatment planning. In this study electron …
View article: High sensitive depleted MOSFET-based neutron dosimetry
High sensitive depleted MOSFET-based neutron dosimetry Open
A new dosemeter based on a depleted Metal-Oxide-Semiconductor field effect transistor, sensitive to both neutrons and gamma radiation was manufactured at LAAS-CNRS Laboratory, Toulouse France. In order to be used for neutron dosimetry a th…
View article: Inelastic cross sections of relativistic protons on Lead
Inelastic cross sections of relativistic protons on Lead Open
The inelastic cross section of relativistic protons in Lead was determined indirectly by measuring the neutron distribution along a Lead spallation neutron source. The spallation neutron source was irradiated by 1, 1.5 and 2 GeV protons. T…
View article: A Study of the Response of Depleted Type p-MOSFETs to Electron Doses
A Study of the Response of Depleted Type p-MOSFETs to Electron Doses Open
A study of depleted pMOSFETs characteristics performed with electrons, at energies ranging from 6 to 15 MeV delivered by Linac medical accelerator. The depleted pMOSFETs present high sensitivity to electron doses. Linear threshold voltage …
View article: True ternary fission in high energy proton reactions with 238U and 207Pb
True ternary fission in high energy proton reactions with 238U and 207Pb Open
A re-evaluation of ternary fission data collected in previous experiments of high energy proton reactions with 238U and 207Pb targets was made. The analysis of fragment mass distributions, fission fragment relative velocities and the kinet…
View article: High energy fission cross sections induced by deuteron on 232Th and proton on natPb targets
High energy fission cross sections induced by deuteron on 232Th and proton on natPb targets Open
Total fission cross sections induced by deuterons with energies 1.6, 2.5 and 4.0 GeV on 232Th targets and by protons on natPb targets at energy 2.0 GeV were measured during irradiations at the Nuclotron accelerator, JINR, Dubna. Using Soli…
View article: A study of the response of depleted type p-MOSFETs to electron dose
A study of the response of depleted type p-MOSFETs to electron dose Open
The p-MOSFET dosimeter studied in this work has been manufactured at LAAS- CNRS Laboratory in Toulouse France, for applications in personal and space dosimetry. They are proposed for proton, heavy ions and electron and photon dose measurem…
View article: Radiation protection strategies in the environment of a spallation neutron source
Radiation protection strategies in the environment of a spallation neutron source Open
Due to the high level of radiation generated by a spallation source, the construction of an effective shielding is necessary for radiation protection purposes.Neutron dose measurements and calculations around spallation sources are of grea…